S1, Female, dorsal
|Class:||Animals (Animalia) - Jointed Legs (Arthropoda) - Insects (Insecta)|
|Family:||Skimmer (Epiprocta: Libellulidae) iNaturalist Observation|
|Species:||Blue Skimmer (Orthetrum caledonicum)|
|This Photo:||🔍Female, Posterior🔎|
Thank you Reiner Richter for confirming the id of this species for us
General Species Information:
Found on Ellura (in the Murray Mallee, SA), the Adelaide Hills and elsewhere
The recent male we measured was ~47mm long with ~77mm wingspan.
These can be difficult to distinguish as both genders are yellow and black when young. As they age they turn blue. The males go a bright, light sky blue; the females become grey blue.
All males have 3 longer appendages on the rear, the females 2 shorter appendages.
If you are able to take a ventral photo, the males have additional genetals near the join between body & tail. This is what the female connects to when they are mating.
There is another very similar species found in SA, called a Black-headed Skimmer (Crocothemis nigrifrons). As the name suggests, the male has a black head & face (the blue skimmer has a yellow face). The female is very pale grassy brown, with a think black line down it's abdomen.